BBC News Blizzard has taken the wraps off the new video game it has been developing - a collectable card game. Called Hearthstone: Heroes of Warcraft, the duelling game is based around cards players gather. The game will be free to play in that people can earn cards by playing, but they will advance faster by buying cards in stores. Blizzard said Hearthstone was going through internal testing but would be released before the end of 2013. Looks like this is a combo card and video game. Hit the link above to see the rest of the story and some pics.